Other Lower Female Genital Tract Infections

Slide 1 · Other Lower Female GenitalTract Infections

Etiology • Pathogenesis • Morphology • Clinicopathologic correlation

Infections of the vulva, vagina, and cervix — with their upper-tract implications

Dr Abu Suraih Sakhri

MBBS, MD (Pathology)

www.abusuraihsakhri.com

Slide 2 · The lower genital tract is the primary anatomical setting

FRAMEWORK

Vulva

Papular lesions

Vagina

Vaginitis / discharge

Cervix

Cervicitis

Upper tract

Endometritis / salpingitis

Lower genital tract

Potential ascending infection

Conceptual site map — not an anatomical illustration

Slide 3 · A single region contains several pathogen classes

FRAMEWORK

Poxvirus

Molluscum

Yeast

Candida

Protozoan

Trichomonas

Bacterial community

Bacterial vaginosis

Mollicutes

Ureaplasma / Mycoplasma

Bacterium

Chlamydia

Slide 4 · Clinical presentations cluster into three patterns

FRAMEWORK

Localized cutaneous or mucosal papules suggest a superficial lesion such as molluscum.

Pruritus, erythema, and altered discharge direct attention to vaginitis-related syndromes.

Cervicitis may be an initial lower-tract manifestation of an infection capable of ascending.

The symptom pattern informs suspicion but should not replace organism-specific evidence.

Slide 5 · Typical findings can distinguish common syndromes

FRAMEWORK

Condition

Characteristic clinical clue

Anatomic emphasis

Molluscum

Pearly, umbilicated papules

Skin / mucosa

Candida

Pruritus; Curdlike discharge

Vulvovaginal

Trichomonas

Yellow, frothy discharge

Vagina / cervix

Bacterial vaginosis

Thin, malodorous discharge

Vagina

Chlamydia

Cervicitis; Possible ascent

Cervix → upper tract

Slide 6 · Transmission is not uniform across these infections

FRAMEWORK

Contact in childhood

• Molluscum: Direct contact or shared articles

• Sites often trunk, arms, legs

• A lesion does not by itself establish sexual transmission

Adult genital context

• Molluscum is typically sexually transmitted

• Trichomonas is usually sexually transmitted

• Candidiasis is not classified as an STI

Slide 7 · Clinical appearance and morphologic evidence answer different questions

FRAMEWORK

The type of lesion or discharge establishes a useful clinicopathologic pattern.

Viral cytoplasmic inclusions, fungal elements, and coccobacilli-coated cells are distinct morphologic clues.

Finding an organism-associated structure is different from concluding that every patient with similar symptoms has the same cause.

Characteristic findings rather than a universal, stand-alone testing algorithm.

Slide 8 · Molluscum contagiosum is caused by a poxvirus

MOLLUSCUM CONTAGIOSUM

The infection forms cutaneous or mucosal lesions.

Molluscum contagiosum viruses are designated MCV-1 through MCV-4.

MCV-1 is described as the most prevalent type.

MCV-2 is described as the type most often associated with sexual transmission.

Slide 9 · The four MCV types have different epidemiologic emphases

MOLLUSCUM CONTAGIOSUM

Virus types

Textbook-supported relationship

MCV-1

Most prevalent

MCV-2

Most often sexually transmitted

MCV-3 and MCV-4

Listed as types; No further prevalence claim made

Slide 10 · Childhood molluscum typically spreads through contact

MOLLUSCUM CONTAGIOSUM

Infections are common in children aged approximately 2–12 years.

Direct contact can transmit infection.

Shared articles, including towels, offer another transmission route.

The trunk, arms, and legs are common skin sites in this age group.

Slide 11 · Adult molluscum frequently involves genital and adjacent skin

MOLLUSCUM CONTAGIOSUM

In adults, infections are typically sexually transmitted.

Characteristic sites include the genitals and lower abdomen.

Buttocks and inner thighs are also affected.

Anatomic distribution and exposure context help interpret the lesion.

Slide 12 · The characteristic molluscum lesion is small and umbilicated

MOLLUSCUM CONTAGIOSUM

The average incubation period is described as approximately 6 weeks.

Papules measure roughly 1–5 mm in diameter.

The surface is pearly and dome-shaped, with a dimpled center.

Clinical recognition is based strongly on this characteristic appearance.

Slide 13 · Papule architecture explains the clinical dimple and core

MOLLUSCUM CONTAGIOSUM

Surface appearance

Central umbilication

Underlying lesion contents

Epithelial cells with cytoplasmic inclusions

Schematic — not a clinical photograph or photomicrograph

Slide 14 · The waxy core contains cells with viral inclusions

MOLLUSCUM CONTAGIOSUM

Epithelial cell

Viral inclusion within cytoplasm

Central waxy core contains inclusion-bearing cells

Schematic cellular illustration — not histology

Slide 15 · The hallmark viral inclusion is cytoplasmic

MOLLUSCUM CONTAGIOSUM

Molluscum-infected cells contain intracytoplasmic viral inclusions.

The waxy central core contains inclusion-bearing cells.

Clinical morphology and cellular inclusions describe different scales of the same lesion.

Distinguish these cytoplasmic inclusions from intranuclear viral effects described for HSV.

Slide 16 · The clinical and histologic signatures are complementary

MOLLUSCUM CONTAGIOSUM

Scale

Characteristic observation

Interpretation

Visible papule

Pearly dome with central dimple

Clinical morphology

Lesion core

Waxy material

Contains infected cells

Cellular finding

Cytoplasmic viral inclusions

Morphologic correlate

Slide 17 · Case: Genital papules with central umbilication

MOLLUSCUM CONTAGIOSUM

An adult has multiple 2–3 mm pearly papules on the inner thigh and genital skin, each with a small central dimple. Which diagnosis best matches the description?

Molluscum contagiosum

Candidiasis

Bacterial vaginosis

Answer and reasoning in presenter notes

Slide 18 · Molluscum papules differ from HSV vesicles and ulcers

MOLLUSCUM CONTAGIOSUM

Feature

Molluscum

HSV (adjacent section)

Initial recognizable lesion

Pearly umbilicated papule

Red papule → vesicle

Typical established lesion

Small dome-shaped papule

Painful coalescent ulcers

Viral inclusions

Intracytoplasmic

Intranuclear; Ground glass

Slide 19 · Candida may be part of normal vaginal microflora

CANDIDIASIS

The presence of yeast in the vaginal environment does not automatically imply symptomatic disease.

Candida among commonly present vaginal microorganisms.

Symptomatic candidiasis frequently reflects a disturbance in the vaginal microbial ecosystem.

This distinction explains why organism presence and clinical disease should not be treated as synonyms.

Slide 20 · A disturbed vaginal ecosystem predisposes to candidiasis

CANDIDIASIS

Vaginal yeast may be present

Colonization / microflora

Disturbance in microbial ecosystem

Loss of balanced state

Symptomatic candidiasis

Pruritus • erythema • discharge

Conceptual process — not a claim that every colonized patient develops disease

Slide 21 · Several clinical settings increase candidiasis susceptibility

CANDIDIASIS

Symptomatic candidiasis

Diabetes

Antibiotics

Pregnancy

Neutrophil dysfunction

Th17 dysfunction

Slide 22 · Antifungal host defenses include neutrophils and Th17 cells

CANDIDIASIS

Neutrophil function

• Important in host defense

• Compromise raises symptomatic risk

Th17 T-cell function

• Important in mucosal antifungal immunity

• Impairment raises symptomatic risk

Both as susceptibility factors; It does not specify quantitative risk.

Slide 23 · Pruritus is a prominent symptom of vulvovaginal candidiasis

CANDIDIASIS

Marked vulvovaginal itching is characteristic.

Erythema accompanies symptomatic mucosal inflammation.

Swelling may be evident on examination.

These inflammatory signs should be interpreted together with discharge and fungal findings.

Slide 24 · Curdlike discharge complements the inflammatory findings

CANDIDIASIS

The discharge is classically described as curdlike.

Vulvovaginal pruritus, redness, and swelling create a recognizable syndrome.

Severity varies; The textbook additionally describes mucosal ulcerations in severe infections.

The discharge pattern is suggestive rather than uniquely pathogen-specific.

Slide 25 · Severe candidiasis can injure the mucosal surface

CANDIDIASIS

Inflammation may progress beyond superficial erythema and edema.

Severe cases can produce mucosal ulcerations.

Ulceration is an indication of substantial local mucosal injury.

Clinical assessment should distinguish severe Candida-associated inflammation from other ulcerative causes.

Slide 26 · Wet KOH examination can reveal fungal structures

CANDIDIASIS

Wet KOH preparation

Pseudospores / filamentous hyphae

What the finding contributes

• Direct morphologic evidence of fungal elements

• Interpret in the setting of symptoms and examination

Schematic microorganisms — not a photomicrograph

Slide 27 · Fungal elements may also appear on cervical cytology

CANDIDIASIS

Fungal structures on Papanicolaou smears.

It describes pseudospores or filamentous fungal hyphae as visible structures.

The morphological finding should be related to the clinical syndrome.

A cytologic observation alone does not establish that symptoms are due to Candida.

Slide 28 · Candidiasis is not classified as a sexually transmitted disease

CANDIDIASIS

Sexual transmission of yeast has been documented.

Nevertheless, the textbook does not classify vulvovaginal candidiasis as an STI.

Symptomatic episodes commonly reflect altered local microbial conditions.

Transmission history and mechanism of disease are therefore separate questions.

Slide 29 · Case: Pruritus, curdlike discharge, and recent antibiotics

CANDIDIASIS

After antibiotic exposure, a patient develops marked vulvovaginal pruritus, erythema and curdlike discharge. Which infectious process is best supported?

Candidiasis

Molluscum

Chlamydial cervicitis

Answer and reasoning in presenter notes

Slide 30 · Trichomonas vaginalis is a flagellated ovoid protozoan

TRICHOMONIASIS

Trichomonas vaginalis

• Large ovoid protozoan

• Flagellated organism

• Usually transmitted through sexual contact

Schematic organism only; No scale or flagellar count is implied

Slide 31 · Trichomoniasis is usually sexually transmitted

TRICHOMONIASIS

The causative organism is Trichomonas vaginalis.

The typical transmission route is sexual contact.

Genital symptoms may occur in the vaginal and cervical regions.

Exposure context is informative but does not predict whether symptoms will be present.

Slide 32 · An infected patient may remain asymptomatic

TRICHOMONIASIS

The source explicitly describes asymptomatic infections.

Others develop vulvovaginal symptoms and altered discharge.

Absence of complaints is therefore not equivalent to absence of infection.

This variable expression affects reliance on symptom-only recognition.

Slide 33 · Yellow, frothy discharge is a characteristic clinical clue

TRICHOMONIASIS

The described discharge is yellow and frothy.

The finding accompanies a vaginal inflammatory syndrome.

The discharge pattern provides an immediate clue to trichomoniasis.

Morphology of the organism, exposure history, and mucosal findings can refine the interpretation.

Slide 34 · Urinary and intercourse-associated discomfort may occur

TRICHOMONIASIS

Vulvovaginal discomfort is common among symptomatic patients.

Dysuria refers to painful urination.

Dyspareunia refers to painful intercourse.

These complaints extend the syndrome beyond discharge alone.

Slide 35 · The vaginal and cervical mucosa may appear fiery red

TRICHOMONIASIS

The source describes a markedly erythematous appearance.

The observation reflects an inflammatory mucosal response.

The cervix may show prominent mucosal vascular dilation.

This vascular appearance underlies the classic strawberry-cervix description.

Slide 36 · “Strawberry cervix” is a vascular colposcopic pattern

TRICHOMONIASIS

Prominent mucosal vascular dilation

“Strawberry cervix”

• Characteristic colposcopic appearance

• Reflects conspicuous cervical mucosal vessels

• Occurs with trichomonal inflammation

Stylized vascular-pattern schematic — not a colposcopic image

Slide 37 · Case: Frothy discharge, dysuria, and a red cervix

TRICHOMONIASIS

A patient reports yellow frothy discharge, dysuria, and discomfort with intercourse. Examination reveals a markedly erythematous cervix. Which source-described infection is most consistent?

Trichomoniasis

Molluscum

Bacterial vaginosis

Answer and reasoning in presenter notes

Slide 38 · Gardnerella is strongly associated with bacterial vaginosis

BACTERIAL VAGINOSIS

Gardnerella vaginalis as a major organism associated with the syndrome.

It describes G. Vaginalis as a gram-negative coccobacillus.

The associated microbiologic setting is not limited to a single bacterial species.

The characteristic clinical syndrome involves altered, malodorous discharge.

Slide 39 · Bacterial vaginosis involves a mixed bacterial pattern

BACTERIAL VAGINOSIS

Bacterial vaginosis-associated community

Gardnerella vaginalis

Anaerobic peptostreptococci

α-hemolytic streptococci

Source describes a mixed bacterial picture; No organism proportions are implied.

Slide 40 · Thin, malodorous discharge contrasts with curdlike discharge

BACTERIAL VAGINOSIS

The discharge is described as thin and green-gray.

A fishy odor is a characteristic observation.

The source contrasts implicitly with the curdlike discharge of candidiasis.

Symptom pattern can orient clinical recognition without identifying every associated bacterium.

Slide 41 · Coccobacilli coat squamous cells in bacterial vaginosis

BACTERIAL VAGINOSIS

Squamous cell

Cell coated with coccobacilli

Conceptual cell morphology — not a Pap smear image

Slide 42 · Pap cytology may display shaggy-coated squamous cells

BACTERIAL VAGINOSIS

The source describes superficial and intermediate squamous cells on Pap smears.

Coccobacilli cover the cells, creating a shaggy-appearing border.

The appearance is commonly called a clue-cell pattern.

It represents adherence of bacterial organisms to epithelial surfaces.

Slide 43 · The bacterial background may include several organisms

BACTERIAL VAGINOSIS

Organism/group

Reported association

Gardnerella vaginalis

Main implicated coccobacillus

Anaerobic peptostreptococci

Other organisms identified by culture

Aerobic α-hemolytic streptococci

Additional organisms identified by culture

Slide 44 · Pregnancy makes bacterial vaginosis clinically relevant

BACTERIAL VAGINOSIS

The textbook associates bacterial vaginosis with premature labor.

This is an obstetric association, not a quantitative individual risk estimate.

Infection-associated adverse outcomes should be interpreted within the broader pregnancy context.

No specific screening, treatment, or numerical risk threshold is provided in this source passage.

Slide 45 · Case: Thin fishy discharge and coated squamous cells

BACTERIAL VAGINOSIS

A patient has thin, fishy-smelling green-gray discharge. Squamous cells in cytology are densely coated by small coccobacilli. Which syndrome best matches?

Bacterial vaginosis

Candidiasis

Molluscum

Answer and reasoning in presenter notes

Slide 46 · Two Mollicutes are discussed in lower genital tract infection

UREAPLASMA AND MYCOPLASMA

The source specifically names Ureaplasma urealyticum.

It also names Mycoplasma hominis.

These organisms account for some reported cases of vaginitis and cervicitis.

Their clinical relevance spans the lower tract and pregnancy-associated disorders.

Slide 47 · Ureaplasma and Mycoplasma have a lower-tract presentation

UREAPLASMA AND MYCOPLASMA

Vaginitis is among the conditions linked to these organisms.

Cervicitis is another recognized presentation in the source.

The supplied passage gives no pathognomonic discharge, smear appearance, or diagnostic criterion.

A teaching distinction is that attribution to these organisms cannot be made from a unique clinical hallmark here.

Slide 48 · Pregnancy-associated complications include chorioamnionitis

UREAPLASMA AND MYCOPLASMA

Both organisms are implicated in pregnancy-associated chorioamnionitis.

The source also associates them with premature delivery.

These statements describe reported clinical involvement, not an exact risk magnitude.

The wording “implicated” should be preserved rather than presented as proof of causality in every case.

Slide 49 · Association does not specify a diagnostic threshold

UREAPLASMA AND MYCOPLASMA

The source provides names and associated syndromes, but not standardized microbiologic cutoffs.

It does not specify sensitivity or specificity for individual organism detection.

No single specific morphologic lesion is assigned to these infections in this excerpt.

A sound pathology lecture should not invent a laboratory threshold or characteristic smear.

Slide 50 · Chlamydia trachomatis principally presents as cervicitis

CHLAMYDIAL INFECTION

The dominant lower-tract manifestation discussed is cervicitis.

The cervical focus distinguishes the emphasis from predominantly vaginal discharge syndromes.

The same organism can also cause disease beyond the cervix.

The clinical significance is the potential transition from a lower-tract infection to upper-tract inflammation.

Slide 51 · Some chlamydial infections spread upward

CHLAMYDIAL INFECTION

Cervix

Predominant presentation

Uterus / endometrium

Possible extension

Fallopian tubes

Possible salpingitis

PID

Clinical complication

Only a subset of cervical infections ascend to the upper tract.

Slide 52 · Ascending infection can cause endometritis

CHLAMYDIAL INFECTION

The uterus is a potential site of upward spread.

Infection of the endometrial region causes endometritis.

The source places this within progression beyond cervicitis.

Endometritis is part of a spectrum of upper-tract involvement, not the usual initial described presentation.

Slide 53 · Fallopian-tube involvement produces salpingitis

CHLAMYDIAL INFECTION

An ascending infection may reach the fallopian tubes.

Salpingitis refers to inflammation of those tubes.

The tube is an important upper-tract site of clinical concern.

The next Robbins topic addresses the more extensive pathology of pelvic inflammatory disease.

Slide 54 · Chlamydia is one cause of pelvic inflammatory disease

CHLAMYDIAL INFECTION

Ascending infection can involve both the endometrium and fallopian tubes.

The source explicitly identifies Chlamydia as an etiologic cause of PID.

PID is broader than an isolated cervical infection.

This lecture limits the PID discussion to the ascending-infection connection.

Slide 55 · Site progression links cervicitis to upper-tract disease

CHLAMYDIAL INFECTION

Vulva

Papular lesions

Vagina

Vaginitis / discharge

Cervix

Cervicitis

Upper tract

Endometritis / salpingitis

Lower genital tract

Potential ascending infection

Conceptual site map — not an anatomical illustration

Slide 56 · Case: Cervicitis with later uterine and tubal involvement

CHLAMYDIAL INFECTION

A patient initially has cervicitis; Later investigations indicate endometritis and salpingitis. Which organism in this lesson is explicitly associated with this pattern?

Chlamydia trachomatis

Molluscum contagiosum

Candida

Answer and reasoning in presenter notes

Slide 57 · Discharge phenotypes provide a practical comparison

INTEGRATION

Condition

Typical discharge

Additional clue

Candida

Curdlike

Marked itching; Erythema

Trichomonas

Yellow, frothy

Dysuria; Fiery-red cervix

Bacterial vaginosis

Thin, green-gray; Fishy

Coccobacilli-coated squamous cells

Slide 58 · Specimen-level clues differ among these infections

INTEGRATION

Infection

Source-described morphology

Where it is identified

Molluscum

Intracytoplasmic viral inclusions

Cells in lesion core

Candida

Pseudospores / hyphae

Wet KOH mount or Pap smear

Bacterial vaginosis

Coated squamous cells

Pap smear

Slide 59 · A lesion–discharge–cervicitis framework guides teaching

INTEGRATION

Papules

Superficial lesion

Molluscum

Discharge / vaginitis

Local mucosal syndrome

Candida • Trichomonas • BV

Cervicitis

Possible ascending route

Chlamydia • Mollicutes

Slide 60 · Obstetric relevance differs across the infectious groups

INTEGRATION

Infection

Pregnancy-related statement

Candidiasis

Pregnancy is a susceptibility context

Bacterial vaginosis

Implicated in premature labor

Ureaplasma / Mycoplasma

Implicated in chorioamnionitis and premature delivery

Chlamydia

Upper-tract ascent emphasized; No pregnancy outcome in this passage

Slide 61 · Route of transmission must not be inferred from symptoms

INTEGRATION

Condition

Source-supported transmission framing

Molluscum

Childhood contact/fomites; Adults typically sexually transmitted

Trichomonas

Usually sexually transmitted

Candida

Sexual spread documented, but not classified as an STI

Chlamydia

Included among sexually transmitted infections in parent context

Bacterial vaginosis

No route classified in this excerpt

Slide 62 · A positive finding and a causal diagnosis are not identical

INTEGRATION

Normal microflora can include Candida without symptomatic candidiasis.

Bacterial vaginosis is associated with a mixture of bacteria rather than a single isolated organism description.

Ureaplasma and Mycoplasma are “implicated” in several outcomes; This does not identify a unique patient-level mechanism.

Morphology, clinical syndrome, and anatomic site should be interpreted together.

Slide 63 · Case: Match the phenotype to the source-defined syndrome

INTEGRATION

Which pairing is correct according to the source: Curdlike discharge and coccobacilli-coated cells; Frothy discharge and strawberry cervix; Or umbilicated papules and chlamydial cervicitis?

Frothy discharge + strawberry cervix

Curdlike + coated squamous cells

Umbilicated papules + cervicitis

Answer and reasoning in presenter notes

Slide 64 · The central comparisons integrate pathogen, site, and morphology

INTEGRATION

Molluscum: Poxvirus papules with cytoplasmic inclusions.

Candida: Ecosystem disturbance, pruritus, curdlike discharge, and fungal structures.

Trichomonas: Usually sexually transmitted protozoan with frothy discharge and red mucosa.

Bacterial vaginosis: Mixed bacteria, thin fishy discharge, and coated squamous cells.

Ureaplasma/Mycoplasma: Some vaginitis/cervicitis and reported obstetric complications.

Chlamydia: Cervicitis with potential ascent to endometrium and fallopian tubes.

Slide 65 · Primary source and scope limitations

REFERENCES

Robbins, Cotran & Kumar. Pathologic Basis of Disease. 11th edition (2026). Chapter 22, “The Female Genital Tract,” pp. 897–898.

Topic subsection: “Other Lower Female Genital Tract Infections”; nearby HSV and PID sections used solely for stated contrasts and transitions.

Figures are original native PowerPoint teaching schematics, not reproduced textbook figures or diagnostic specimen images.

The supplied Markdown extract was available; original Chapter 22 PDF and original figure panels were not supplied for inspection.